Car-ventilator



(No Modl.)

J. WALKER.

GAR VENTILATOR.

N.`274o63. Patented Mar.1s,1s8s

UNITED STATES PATENT OFFICE.

l .IAMEswALxEaOE WYOMING, AssIeNon E ONE-HALE TOIEOEEET c.

` MAxwELL, OE CINCINNATI, OHIO.

CAR-VENTILTOR.

SPECIFICATION forming part of Letters Patent No. 274,063, dated March13, 1883.

Application tiled September 30, 1882. (No model.)

To all whom it may concer-n:

Be it known that I, JAMES WALKER, of Wyoming, Hamilton county, Ohio,have invented a new and useful Ventilating Attachmentfor Railway-Gars,of which the following is a specification.

My invention has for its object a more free circulation of airinrailway-vehicles ,and itconsists essentially ot' iiaps or fans thatproject from a horizontal shaft that extends athwart the ventilator ordome of the car, and is armed on each outer side of ventilator with awind- -wheel half incased in'suitable deiiectors that `ventilatorembodying my invention. Fig. 2 is an end elevation of the same.` Figs. 3and 4. are a similar section and elevation of a modifi` cat-ion of myinvention, a portion of the inclosing-wall in FigA. being broken away.Fig.

V5 is a side elevation of my brake.

A may represent the dome or louvre of a railway-car; B, a shaft thatextends horizontally athwart the same. That part of the shaft B which isincluded within thelouvre is armed wlth naps or fans Q, and itsprotruding extremities are armed with wheels D D,having` vanes d of thespiralform shown.

E represents a combined canopy and deflector, which unites the officesof protection ofthe wheel from snow, 85o., and of deflecting andconcentrating the air-current upon the upper half of the Wheel, thuscausing the entire force of the wind to be directed to revolving thewheel in one direction. The spiral form of the wheel-blades insures apractically uniform and constant action'of the air-currents.

An open-work cage or fender, F, prevents accidental contact ofpassengers or employs with the fans without sensibly interruptingtheiiow of air-currents.

A pair of jaws, G G', and a screw, H, constitute a clamp or brake'whichenables any occupant of thecar to diminish, slackeu, or arrest therotation of the fan atwill.

In Figs. 3 and 4 a. modification is shown, in which it is the lowerinstead of the upper half of the wind-wheel which is covered by thedeiiector, the deflector E in said modification resting upon thecar-roof. u

Besides the advantage of increased power from two wind-wheelsone on eachend of the spindle or shaft to which thefans are attached- I am enabledto make each wind-Wheel smaller to get the samepower that would berequired from one, and my device therebyloollis much neater on the carthan one large wind-wheel does. I am also enabled to locate mywindwheels in a much less objectionable place than on the top of theupper root'. In fact, some rail-A roads cannot permit a wind-wheel to beplaced on the upper roof, for the simple reason that their cars haveonly two inches clearance in some tunnels and bridges, while any carwith my wind-wheels can go safely through any tunnel or any bridge thecar can go through without them. The wings ofthe wind-wheel,

running in the length of the wheel from one quarter ofthe diameter tothe next quarter, expose at all times to the wind a full Wing, or twohalves or portions of two, equal to one wing, and thereby keep up acontinuous, even motion of the fans inside. y

My brake is so easily reached and so simple that any passenger, althoughhe may never have seen it before, will at once understand how toregulate the speed of the fans or arrest them altogether should it befound necessary to do either for the comfort of the passengers at anytime, or to allow them to move should they be standing still. 4

I am aware that descriptions exist of public vehicles ventilated by fanswithin the car, impelled by vanes or wheels which are rotated by theimpact of the outside air, and that devices exist for governing theSpeed of such fans and protecting them from Contact with objects withinthe vehicle, and I therefore do not claim such devices, broadly.

I claim as new and of my inventionl. Aventilating apparatus forrailway-cars, which consists ot' shaft B, that extends horizontallyacross'the dome or louvre A, within which it is armed with fans C, andoutside ot' which it is armed with wind-wheels D D', in

the described combination with the canopy' and deflector E, the wholebeing arrangedand operating as set forth.l

2. iIn a railway-car, in combination with the Ventilating-fans C, Withinthe dome or louvre, In testimony of which invention I hereunto the guardor fender F, Within the car', subset my hand.

stantiallylas set forth.

3. In a. railwaycar, the combination, with JAMES WALKER' 5 theventilator having shaft B, of the regulat- Attest:

ing-brake consisting of jaws G G and screw GEO. H. KNIGHT,

E, substantially as set forth. EMMETT N. PARKER.

